"lianyudao" does not correspond to any specific known term in English or any major languages I'm familiar with. It could be:

1. A name or term from a language I'm not familiar with.

2. A typo or misspelling of another word or phrase.

3. A made-up word or code.

Could you please provide more context or clarify what you mean by "lianyudao"? This would help me give you a more accurate and helpful response.